Author Question: Calculate the molality of a 21.6 (by mass) aqueous solution of phosphoric acid (H3PO4 ). A) 2.81 ... (Read 178 times)

OSWALD · **on:** Aug 27, 2018

Calculate the molality of a 21.6 (by mass) aqueous solution of phosphoric acid (H3PO4 ).

A) 2.81 m
B) 276 m
C) 5.62 m
D) 1.41 m
E) The density of the solution is needed to solve the problem.

Question 2

Which of the following is a positive association with the study of chemistry?

A) Chemistry is relevant to our daily lives.
B) Chemistry offers career opportunities.
C) Chemistry has biomedical applications.
D) Chemistry benefits society.
E) all of the above